Sensor unit



FIG. 1 is a reduced bottom perspective view of a sensor unit showing our new design;

FIG. 2 is a reduced top perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a side elevational view taken from the left of FIG. 1;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view showing the face. 

The ornamental design for a sensor unit, as shown and described. 